Preparation, structure and bioactivity of xAu2O3•(100-x)[P2O5•CaO] glass system

被引:6
作者
Regos, Adriana N. [1 ]
Ardelean, I. [1 ]
机构
[1] Univ Babes Bolyai, Fac Phys, Cluj Napoca 400084, Romania
关键词
Structure characterization; Calcium phosphate glass; Gold; Bioactivity; Hydroxyapatite; PHOSPHATE-GLASSES; SPECTRA;
D O I
10.1016/j.molstruc.2011.09.025
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Gold doped calcium phosphate glasses were prepared by the melting method. The structure of Au2O3-P2O5-CaO glasses is investigated using X-ray diffraction, infrared absorption and Raman scattering. The depth characterization of their structures is essential for the understanding of the properties of biocompatible materials. Thermal analysis DTA and TGA were also made to study behavior under different temperature regions and to see chemical changes versus time and temperature of these glasses. Bioactivity of the glasses was investigated in vitro by examining apatite formation on the surface of glasses treated in acellular simulated body fluid (SBF) with ion concentrations nearly equal to those in human blood plasma. Formation of bioactive apatite layer on the samples treated in SBF for 28 days at 37 degrees C was confirmed by X-ray diffraction (XRD) and scanning electron microscope (SEM). The effect of SBF soaking induces structural changes on the surface, reflected by the appearance of nano-crystalline particles agglomerated into micro-aggregates. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:312 / 317
页数:6
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